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Holmium(III) Supermesityl-Imide Complexes Bearing Methylaluminato/Gallato Ligands
oleh: Dorothea Schädle, Cäcilia Maichle-Mössmer, Karl W. Törnroos, Reiner Anwander
Format: | Article |
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Diterbitkan: | MDPI AG 2015-11-01 |
Deskripsi
Heterobimetallic µ2-imide complexes [Ho(µ2-Nmes*){Al(CH3)4}]2 (1, supermesityl = mes* = C6H2tBu3-2,4,6) and [Ho(µ2-Nmes*){Ga(CH3)4}]2 (2) have been synthesized from homoleptic complexes Ho[M(CH3)4]3 (M = Al, Ga) via deprotonation of H2Nmes* or with K[NH(mes*)] according to a salt metathesis-protonolysis tandem reaction. Single-crystal X-ray diffraction of isostructural complexes [Ho(µ2-Nmes*){M(CH3)4}]2 (M = Al, Ga) revealed asymmetric Ho2N2 metallacycles with very short Ho–N bond lengths and secondary Ho arene interactions.